when I was weaning both mine, I dropped nursing by one session every couple of days, and instead replaced it with some healthy snacks, or a sippy cup of cow's milk (they were over a yr old when I started weaning) until I got down to one nursing session per day. Since I did it so slowly, they didn't seem to take much notice, and one day I dropped the final nursing session, and neither seemed to care much, they had adjusted to the less frequent nursing.
I also realized that doing so this way kept me from getting engorged as well once I stopped for good.